So Excited!!! Pure SINE Inverter PCB at 230V and 50Hz

[@ELECTRONOOBS]

Join my Arduino Course (Spanish): bit.ly/2JY8icE My Tools: bit.ly/3uv8bc3 Help me on Patreon: www.patreon.com/ELECTRONOOBS

[@pc-help23]

попробуй включить холодильник

[@Woodz_007]

Can you pls tell me which software did you use to design the PCB of this project?

[@saberxebeck]

@uaart23 PLEASE DONT KIDS, He's joking because it's too dangerous to use on a fridge

[@hamadyt956]

Why to convert DC to AC then AC to DC then DC to AC when you can convert direct DC to Ac in one step with module

[@bobparquet]

@@Woodz_007 He only replies to those who compliment him, to criticize him or to those who don't want to pay he doesn't answer

[@boneikribo420]

the diode you are using is not recommended for high frequency, try to use a high frequency diode like mur460 or her408, if you use a bridge diode as in the video it will usually heat up quickly and break easily and is recommended for low frequency. and if the circuit works at 20watt even without load try to add a 20k potentiometer on pin 6 ic sg3525, then try to connect it to the power supply, then rotate the potentiometer until you get the lowest standby amperage, usually the problem occurs in the mismatching of the transformer and pwm frequency, pin6 on the sg3525 ic to adjust the frequency, and it could also be a problem with the high voltage 300v output diode, try using an ultrafast diode.

[@Sartajkhankhan-r5f]

You are engineer or repair electronics

[@piszczekpawe7767]

You are absolutely right. I made this inverter according to this project and in fact: in the idle state it consumes quite a large current and it had to be corrected, secondly, Shotky diodes had to be used in the rectifier. Not to mention the routing of paths and the unfortunate location of other elements... especially when it comes to large capacitors. If someone thinks that they will run this system without much knowledge, they can seriously miss the point

[@luiscarlosmarques3946]

Sure ! The efficience is down with it too. Maybe an ultra fast diode there

[@lpt2606]

i am very happy you made this project. looks like it works well

[@ELECTRONOOBS]

Glad you like it!

[@dennisfahey2379]

Nicely done. As digital board designers we tend to think of a trace as a line from point to point. (5mil here) However if you look at analog boards, and especially audio, those PCB designers seem to take the opposite approach and create isolated islands, leaving as much copper as is possible. So they simply create design rules mandating clearance and "flood" the plane as much as possible. This of course gives you more current capacity. The boards conduct heat better and will etch faster. Surface Mount technology originated in Audio/Visual markets where single sided boards were dominant An all SMT board needs no drilling or vias. Just mentioning this because there are many ways to do something right and its a fun exercise to consider the options.

[@anwin85alon]

pm me can you to install do solar panel of charger

[@trevormang7464]

I think a great addition to the project is the ability to select voltage and frequency. It would really be useful when testing equipment from foreign countries, like testing 120v/60Hz appliances in 230v/50Hz countries.

[@VictorC173]

For 120v the output DC voltage shout be half, or around 170-200v, and to change to 60Hz, you only need to make a jumper on the control board, there are a lot of information about (the board is egs002), you also need to change the voltage divide om the output so the board doesn't think it is under voltage or something like that...

[@ELECTRONOOBS]

Yes, the driver, on the back it has a few pads. Bu shorting JP1 you change the frequency to 60Hz. Check here: 2.bp.blogspot.com/-dCnZ-R7fvxg/VxjjoYuf0TI/AAAAAAAAAYQ/beKxILumNvIr-FTpv1uquqtYu6-A6aWiwCLcB/s640/jumper%2Bsetting.jpg

[@icarus901]

@@ELECTRONOOBS Could another frequency be set instead? Like 62.5 or something? That would help in some solar panel microinverter applications..

[@shadmtmtn1603]

​​​@@icarus901o be complete, for testing other devices for exemple, an UPS should be able to provide 99V to 132V @ 54Hz to 66Hz (for 110/120V +/- 10% @ 60Hz +/- 10%) or 198V to 264V @ 45 to 66Hz (for 220/230/240V +/- 10% @ 50 or 60Hz +/- 10%) with continuous variation on both voltage and frequency. That's a very hard technical challenge ! 🖖 Edit to add : that's why some power supplies are rated 99 to 264V @ 45 to 66Hz 😉 Consider Aviation, with 115/120V @ 400Hz +/- 10% too 😅

[@milanmakwana3883]

​@@ELECTRONOOBS is it possible to used ferrite core because its working on high frequeancy and our output is 50Hz only can you clear me

[@FeroFoltan]

Ďakujeme.

[@AnilArya51]

Please do make a upgraded version of this with more power and also continue making such great content. Much Love and support from India

[@anwin85alon]

pm me can you to install do solar panel of charger

[@ddub9968]

I'm curious why you didn't add a bleeder resistor across the HV caps. Definitely love this project. Thanks!

[@SteveWrightNZ]

it takes efficiency directly away from the unit

[@shadmtmtn1603]

​@@SteveWrightNZ DC Caps with a voltage over 50V should be discharged in less than 5 mins, it is a normative point. This UPS is a great project, but could not be sold with its current schematic !

​@@SteveWrightNZ bleeder resistors take a few milliwatts. Percentage-wise it's 0.0x% wasted energy.

[@SteveWrightNZ]

@ No I dont think so. Do the math.

@@SteveWrightNZ oky-doky! Let us *do the math!* Bleed resistors for the mains charged filtering caps are in the 500kiloohm to 1.5Megaohm range. A capacitor in the hundreds of microfarads stores many Joules if energy but many Joules are very few Watts/hour. We want the cap to be discharged in a few minutes. The voltage across the capacitors is in the 350Vdc range for 220Vac. I=U/R 350Volts/500000ohms=0.00064amperes or 350v/1000000ohms=0.00032amperes P=UxI This gives us 0.00064Ax350V=0.224W *Two hundred and twentyfour milliwatts of lost and wasted precious power in a killowatt range power supply.* Here's your losses. Do the math not thd meth!

[@youneshamache3314]

Nicely done ! I've made an inverter few months ago based on the same ship, the most challenging part to me was the inductor filter, I struggled alot to find the right material core (it has to be a low permeability core), adding to that I had to reach around 3.3mH inductance, but after 80 turns I almost had no window area left to add more turns and I only got 1.2mH, So I had to compensate that with a higher output capacitor ! It was so far my best project and the satisfaction you feel once you get your output sinewave is just priceless ! I would like to mention a last thing, do not trust the readings of the LCD display it's fake !

[@mephistowalzofficial9970]

Hello, is the LCD display of no use at all?

[@youneshamache3314]

@@mephistowalzofficial9970 Maybe for decoration 😅😅 I would not recommand it ! My advice to you is that you should not trust the displayed values on that lcd

[@fotherja]

Have you documented your work anywhere? I'd like to see what you've done?

[@samcreation9225]

Is it working properly bcoz i always got brust my igbt and egs module after few minutes

[@youneshamache3314]

@@samcreation9225Well it's not really robust but you can improve it performance, usually what burns first is the ir2110s chips I recommand you replace it with 4xtlp250 mosfet drivers, it is also recommanded to isolate the control circuit from the power circuit GND, also make sure that your mosfets are of good quality and can withstand the voltage and current ratings of the circuit ! And finally use a proper heatsink (the bigger it is the better is) and a fan if the mosfets get hot alot !

Yes, these are kinda nice but watch the bootstrap voltage on the gate drivers. I blown many ir2110 and mosfets before I scoped the gate drivers power rails. My inverters were randomly blowing when idle or at power-off. I was deep in the dead-time settings but missed the fact that the gate drivers were ringing like mad and spiking to 18v regularly. Lowering the esr on the bootstrap cap did the best in lowering the ringing amplitude. Zenners are the last frontier. My measurements shown 30-40ns long spikes...

[@anwin85alon]

pm me can you to install do solar panel of charger

[@HowtoElectronics]

Good job. HIghly appreciated for such a great project.

[@inventorkr1]

Wooow is Cool PCB design

[@NOBODY-579]

Was waiting for a long time for that project❤❤🔥🔥

[@ELECTRONOOBS]

Happy to deliver :=)

[@anwin85alon]

pm me can you to install do solar panel of charger

[@ridwananhar4418]

This project deserve a like 😁.

[@Delali]

I'm so excited to see this. Nicely done That sine wave looks beautiful and perfect.

[@anwin85alon]

pm me can you to install do solar panel of charger

[@RinksRides]

Excellent work Electronoobs.

[@ELECTRONOOBS]

Thanks!

[@anwin85alon]

pm me can you to install do solar panel of charger

[@mannyquinn9031]

Thank you electronoobs ,this was very insightful and entertaining. Good luck in further projects.

[@anwin85alon]

pm me can you to install do solar panel of charger

[@blackIce504]

A trick that will not need a redesign is to mount the IGBT's and other fets under the board so that you can mount to a Heatsink like an amp or some of the grid tie inverters this will allow more room for heat sink thus better cooling as those caps behind the IGBT's are in the way, but other then that very clean board.

[@shadmtmtn1603]

And the caps themselves are too close to the transformer, they won't last long with that heat, maybe they should be on the other side too !

[@anwin85alon]

pm me can you to install do solar panel of charger

[@TBL_stevennelson]

I appreciate all the work you've put into your Videos and the free stuff you share. I hope one day to be half as good as you with electronics

[@anwin85alon]

pm me can you to install do solar panel of charger

[@akashpathave8985]

Really Good Video Sir, Your great teacher...

[@anwin85alon]

pm me can you to install do solar panel of charger

[@VictorC173]

I took a look at the schematics and... I think that the bridge rectifier is not rated for high frequency, that may explain the low efficiency at light loads, and may cause catastrophic failure at higher loads.... The ideal is to use fast recovery diodes... And for 500w, that shunt resistor will do nothing I think... The voltage drop the egs002 board detect is 0,5v I think, and for 500w 0,25 ohms should be enough for 2amps overload at the output

[@wojciechbajon]

Also it isn't present on "BOM" list

[@Electronic_For_You]

Nice video 👍

[@iuhere]

@10:04 that perfect sine wave curve is so satisfying to watch

[@anwin85alon]

pm me can you to install do solar panel of charger

[@victorluz8521]

Looks lovely! Very good reference for when I have to go make one.

[@JowLee-sk8rp]

Ur videos are truly fantastic. How i wish i could just buy products made by you.

[@ChixinCheng]

Thank you for this awesome project. You have add to my source of knowledge.

[@anwin85alon]

pm me can you to install do solar panel of charger

[@yuribiktop6595]

You did well but you need protection at the high frequency side for short circuit , low battery warning and low battery cuttoff including overload protection

[@Peter_A1466]

Did you take any safety measures in your board design? Would be nice if you go into minimum track width, spacing and creepage.

[@gdipaolo]

this is DIY proyect not a commercial one, leve the detail designing for the profesionals 🙂

[@maxhouseman3129]

Definetly. I don't think that he calculated a single parameter. Greets from a "professional".

[@GabrielBravoV]

amazing work! 🎉

[@orphax1925]

thanks, I'm currently repairing a commercial one and was condused why there were two transformer core & what was the role of the 4 high voltage igbt, it's now all clear !!

[@icraftcrafts8685]

thanks for posting this one.

[@anwin85alon]

pm me can you to install do solar panel of charger

[@hobielektronika959]

Good Jobs Sir 👍🏼 Hobi Elektronika Coming 😊

[@n_tsilivigos]

Amazing work! Keep it up!

[@JonathanDeWitt1988]

Andrei, Another fantastic project. This was very educational and interesting. I began to wonder what would be necessary to convert to 120 V output at 60 Hz since I live in the U.S. I saw the comments by Victor Silva and yourself below. So that pretty much answered that question (frequency sounds easy with voltage being a little harder). Thank you for creating this wonderful project and sharing it. It was very enjoyable to watch.

[@ELECTRONOOBS]

Frequency is easy to change. For the voltage, you would need to supply the IGBT bridge with 220V instead of 380V. That's why the transformer has 2 outputs. But you will need to change the PCB so the 220V is connected to the IGBT instead of 380V. I haven't tested this yet so this is only a recomendation. Have that in mind!

[@JonathanDeWitt1988]

I understand. Thank you!

[@ranganatennakoon]

Even designed one. its Great, like this! I was waiting !

[@anwin85alon]

pm me can you to install do solar panel of charger

[@ranganatennakoon]

@@anwin85alon yes ! this is not chager. only inverter if you add a solar panel use MPPT or PWM chager.

[@donamills]

And it looks great. Nice work.

[@anwin85alon]

pm me can you to install do solar panel of charger

[@davib8963]

Inspiring video, thanks for making it :)

[@ELECTRONOOBS]

U welcome :)

[@anwin85alon]

pm me can you to install do solar panel of charger

[@michaeld9682]

Great job!!!

[@FlamingoSheriff]

Well done. Great project

[@anwin85alon]

pm me can you to install do solar panel of charger

[@matheokoning4456]

Wasn't it possible to place discharge resistors between those capacitors?

[@ehobby1366]

I really get the knowledge about how these ferrite core transformers work on inveter

[@jafinch78]

Awesome man! On your way to making a all in one welder that can do the aluminum DCEN & DCEP offset waveform control for the balance function welding. Like for weld penetration and oxidation removal. That seems to be the most expensive function and doesn't seem that complicated once understood how to control the waveforms.

[@jafinch78]

Soft are hard starting capacitors added with a bleed resistor (I forget if they come with already) might stabilize the startup slight brownout?

[@donsuttie3758]

Excellent tutorial - thank you

[@Scorry]

A good project indeed. Could you provide schematics in some more editable format?

[@RdGear]

At 10:25 , 20w is too much for 40w ac! I think you research more for improving the efficiency and find the hungry culprit But at the end of the day, it was a great project. Thank you so much.

[@yasirshahzad3732]

Your effort in creating this module is commendable, and I'm truly impressed by its performance. However, I'm curious why the LCD displays zero amperes when a 100-watt load is active.

[@MiguelDeMarchena]

All that is needed now is a huge lithium ion battery pack with BMS and charger, and a transfer circuit with solid state relays then it will become a reliable UPS unit and due the full sine wave it will not make noise or interference. perfect my friend, great job. (note: in places like my country where blackouts are common that device is a jewel)

[@DanSohan]

Could you cover more detail on the transformer you used, or how to design on correctly?

[@temidayoakinshola8243]

Amazing work 👏

[@scottwilliams895]

Cool project, great video! I would have liked to see a cost breakdown if we were to follow your lead and build this project.

[@jimsubtle886]

Such a super good video, thanks!

[@anwin85alon]

pm me can you to install do solar panel of charger

[@memadmax69]

Thank you for this great video. I have wanted to make a few of these for myself for sometime but didn't want to pay $200-300 for one quality full sine wave inverter.

[@anwin85alon]

pm me can you to install do solar panel of charger

[@128Wojtek]

Great job! Saludos 😄

[@Umski]

I’m pretty impressed that you’ve done this from scratch 👏 The 12V input looks a little on the the slim side if you were to go up to 500W - 40+ Amps doesn’t seem likely with that ready made board 😬😳

[@anwin85alon]

pm me can you to install do solar panel of charger

[@sortofsmarter]

Great video. I really wanted to have a block explanation of an inverter. By the way what was the inductance of the larger Inductor and is it super precise on its mH?

[@reinaldohurtado3514]

Felicitaciones compa;ero!

[@anwin85alon]

pm me can you to install do solar panel of charger

[@mmg.mousavi5613]

Awesome project 😊👍

[@anwin85alon]

pm me can you to install do solar panel of charger

[@paulcohen1555]

What are the values of the "big" output inductor and capacitor? How did you calculated them?

[@n.thenushan120]

Best I understand your effort great job ❤

[@anwin85alon]

pm me can you to install do solar panel of charger

[@flawlesstechnologies3490]

Thank you very much for this educative video. I want to build the exact same circuit using your provided files but first, I want to verify the parameters of the shunts you used.

[@anwin85alon]

pm me can you to install do solar panel of charger

[@Pepsify]

Great explanation

[@metalazzo]

what about the cost ? is it cheaper to do or better to buy it ?

[@ELECTRONOOBS]

Almost the same but because the minimum PCB order is 5PCs and the price is 40$ for that. So if you would make 5 inverters, the price will go way down.

[@jamesdim]

Your videos are amazing!

[@Drxxx]

Great channel

[@sandervesik173]

You should add a way for the capacitors to discharge slowly and an indication that this has (not yet) happened. A large value resistor(s) and a led maybe?

[@finnxxxx1206]

thanks for the great video. why did you use the transformer before the circuit and not after the AC voltage was generated?

[@stevebabiak6997]

The transformer seems to be used to provide a boosted voltage, from the 12V at input to the several hundred bolts used to produce the sine waves.

[@yousouf4047]

what is you use really low resistance mosfet instead of the igbts and low voltage drop diode for the rectifier

[@Gengh13]

Nice project.

[@mohamadai6]

That was amazing

[@dantronics1682]

Hi @Electronoobs, can you tell me what value capacitor is on that commercial inverter at 0:38. I have a 1600w spwm with ththe exact layout as you have except it only have 2 boost transformer. the cap on mine is only 68uf where for that sort of power I would be expecting at least 120uf. thanks

[@nalaka1977]

When we calculated as per your design, the switching frequency of the Transformer is 2 KHz. However, the board that you removed the transformer from, works on 20KHz, please let us know what is your design frequency for this Transformer? BTW, Many thanks for posting this project here!

[@mthompson965]

I got the same 2Khz frequency. Also, is it possible to set the EGS002 to 120v, or do I have to trick the feedback circuit?

[@mrashid9910]

Good work

[@thanhhuynh272]

Couple of component and layout pointers. I think I know where much of that 20 watts was going……I bet that full bridge rectifier was hot as hell….they are designed for low frequencies only and commutate far to slowly for use off a high frequency switchmode transformer….iuse four fast diodes like RF1005TF6S or equivlent….and put them on a heatsink. The layout issue was those two 100n caps BEHIND the inverting H-Bridge MOSFETS making it difficult to get a good solid heatsink mounted there, if you move those to the front or put them underneath, then a heatsink can be mounted to both the boaed and FETs. Don,t forget the sil pad to isola te the backs of the FETs from the heatsink. Cheers fron Tasmania!

[@xnxnxn0861]

Nice project and please make a smps power supply in future projects

[@ELECTRONOOBS]

I will!

[@leopoldomartinez907]

Great project, can you create a VFD based on this circuit?

[@drelectronics13]

Adding cap behind mosfet was a bad idea ,it happens sometimes while designing pcb ,not everyone can understand the effort you put ,loved the video ,just one question why the output seems gradually increasing,rather than quick 220 v ,if that's the issue it may not be able to provide backup to high Power device ,(love from INDIA 🇮🇳)

[@andycrask3531]

It's called soft start. So the current builds up slowly

[@drelectronics13]

@@andycrask3531 won't it shut down pc in case of Power cut

[@ELECTRONOOBS]

Is called soft start and you can disable it with the JP6 connector of the driver as you can see here: 2.bp.blogspot.com/-dCnZ-R7fvxg/VxjjoYuf0TI/AAAAAAAAAYQ/beKxILumNvIr-FTpv1uquqtYu6-A6aWiwCLcB/s640/jumper%2Bsetting.jpg

[@drelectronics13]

@@ELECTRONOOBS oh thanks for the info

[@333cgs333]

Awesome project. How would you make it such that can change the frequency (1-10kHz) and the voltage (1-220v). So like a fixed voltage power supply but variable voltage bench power supply.

[@ferchoferefb]

Muy bueno !!! Hace tiempo quiero hacer uno pero con mucha mas potencia !!! Abrazo desde Argentina

[@pointless1987]

Oh man I would love the 3Phase Version of this!!!!

[@weirdsciencetv4999]

Does the spwm board take voltage feedback so that it can compensate for load variations? Would be also cool to add a digital control filter to simulate the lag of a generator so it can drive larger power tools.

[@MultiBwee]

Well done , can you make a small video on how to parallel DC-DC stage transformer to increase output power to maybe 1000 watts or 1500, thanks in advance

[@electroumit]

Thanks. Good work.

[@cypher65]

What is the role of this big coil ? Creating a pure sine from IGBT ?

[@cypher65]

I found out by myself it is a Low Pass Filter

[@yunodiewtf]

Don't you usually want to keep drivers as close to transistors as possible and why didn't you do ground plane generation?

[@tangoalpha8381]

Nice work 🏆🏆🏆🏆

[@guywhoknows]

It's always good to make a project and prototype to learn mistakes and improvements that you would need to make. Let us hope you follow this up, and some of the other projects that you didn't finish or the series that never happen over the years. Keep up the good work

[@anwin85alon]

pm me can you to install do solar panel of charger

[@sajidsurani3367]

Nice 💕💕💕 I love it but sir what for short circuit protection I need any solution for Short circuit

[@jagannathkulkarni]

Thanks for this awesome tutorial, schematics and board designs. You are always awesome with your imaginations and knowledge. Will you be kind to enlighten us with the details of the HV transformer and coils you used ? Anyways great efforts and project . Thanks a lot !!

[@stevebabiak6997]

The transformer he did mention was removed from a board he purchased on Ali Express. But he did not give details on the other two magnetic components. Perhaps they were also purchased somewhere, although he may have harvested them from the inverter he was repairing for his relative.

[@stephensu4371]

nice, i wish to build a portable power bank with ac port, now i can use the more compact version inverter

[@vengug7303]

Hi Sir Great Job Thanks for sharing ... Please share Transformer details for High Voltage side .... and Output Inductor values for more helpful Thank U.

[@scottwilliams895]

Reminds me of *GreatScott DIY or Buy* !

[@jmachorrov]

Buen trabajo me gustaría más detalle de las partes y funcionamiento

[@anwin85alon]

pm me can you to install do solar panel of charger

[@ElectroXa]

what if you connect this inverter straight to the mains ? I would love to see making of a grid tie inverter, connected to the mains

[@Grateful.For.Everything]

Very cool!

[@NikolaosKarahs]

can you up load the diagrams for voltage ,current ,frequency etc ? thanks

[@saadahmed3856]

Great project! Could you please make a video in which you explain about the working of this circuit, boost section waveforms on load, and output section LC filter design with respect to frequency. Thanks for the video❤.

[@saadahmed3856]

I have actually designed the booster section of the inverter which was capable of 250w but the output voltage drops when i put the load on it from 230v to 170v even with regulation feature of sg3525. If you can please make a video about this topic. Thanks

[@aliveandwellinisrael2507]

Hmm, shouldn't there be physical separation (e.g. cut-out sections of the board) separating low-voltage and HV sections? I'd definitely want to make this if it had that and other safety features)

[@maxhouseman3129]

Performance measurements would be interesting: frequency deviation, jitter, max. current, short circuit behavior etc. Also a suitable air gap between DC and AC is mandatory. Greets from an HW engineer.

[@tzitzutzt4322]

Whats the difference (asside obvious) in using igbt's instead mosfets on the output transistors ?

[@ThinkingFurry]

Not that much of a difference, it's just that they switch very similarly to each other and MOSFETs can switch up to MHz while IGBTs are usually able to switch up to 100kHz

[@egg99]

igbts are cheaper for this application. mosfet with that high voltage rating and low power waste would be expensive.

[@teknisiamatir91]

Nice video...